Datasheet > 1250

1250

更新时间： 2024-02-22 09:13:00

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Single Chip Low Cost Low Power RF-Transmitter

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数据手册

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1250 技术参数

生命周期：	Contact Manufacturer	Reach Compliance Code：	compliant
ECCN代码：	EAR99	HTS代码：	8536.90.40.00
风险等级：	5.66	端子和端子排类型：	PCB TERMINAL
Base Number Matches：	1

1250 数据手册

CC2550

Crystal Oscillator

Tc = 25°C @ VDD = 3.0V if nothing else is stated.

Parameter

Min

Typ

Max

Unit

MHz

ppm

Condition/Note

Crystal frequency

Tolerance

±40

This is the total tolerance including a) initial tolerance, b) aging

and c) temperature dependence.

The acceptable crystal tolerance depends on RF frequency and

channel spacing / bandwidth.

ESR

100

Ω

Start-up time

300

µs

Measured on Chipcon’s CC2500EM reference design.

Table 6:Crystal Oscillator Parameters

Frequency Synthesizer Characteristics

Tc = 25°C @ VDD = 3.0V if nothing else is stated. The values are preliminary results and will be updated in later versions

of the data sheet.

Parameter

Min

Typ

Max

Unit

Condition/Note

Programmed

frequency resolution

397

F_XOSC

412

26MHz-27MHz crystal.

2¹⁶

Synthesizer frequency

tolerance

±40

ppm

Given by crystal used. Required accuracy (including

temperature and aging) depends on frequency band and

channel bandwidth / spacing.

RF carrier phase noise

PLL turn-on / hop time

–76

–79

–87

–97

dBc/Hz @ 50kHz offset from carrier

dBc/Hz @ 100kHz offset from carrier

dBc/Hz @ 200kHz offset from carrier

dBc/Hz @ 500kHz offset from carrier

dBc/Hz @ 1MHz offset from carrier

dBc/Hz @ 2MHz offset from carrier

dBc/Hz @ 5MHz offset from carrier

dBc/Hz @ 10MHz offset from carrier

–106

–116

–126

Time from leaving the IDLE state until arriving in the

µs

FSTXON or TX state, when not performing calibration.

Crystal oscillator running.

PLL calibration time

18739

0.72

XOSC

cycles

Calibration can be initiated manually, or automatically

before entering or after leaving RX/TX.

0.69

0.72

Min/typ/max time is for 27/26/26MHz crystal frequency.

Table 7: Frequency Synthesizer Parameters

Preliminary Data Sheet (rev. 1.1)

SWRS039

Page 7 of 51

1...4 5 678 9 10...50

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